US2696165A - Toggle press - Google Patents

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Publication number
US2696165A
US2696165A US249656A US24965651A US2696165A US 2696165 A US2696165 A US 2696165A US 249656 A US249656 A US 249656A US 24965651 A US24965651 A US 24965651A US 2696165 A US2696165 A US 2696165A
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US
United States
Prior art keywords
press
toggle
platen
fulcrum
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US249656A
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English (en)
Inventor
Hecht Helmut Gottfried
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2696165A publication Critical patent/US2696165A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks

Definitions

  • the present invention relates to a toggle press having a specially arranged toggle linkage and constituting an improvement uponthe'toggle presses which are described in U. S. Patent 2,600,242, dated lune l0, 1952.
  • Another object of the present invention is to provide a toggle linkage in which the line of action of the link connecting fulcrum and moving pins is substantially at right angles to the surface of the platen when the toggle linkage is in extended position.
  • a further object of the present invention is to arrange the entire drive below the platen in the lower part of the press frame.
  • An additional object of the press is to arrange two toggle linkages for balanced action on both sides of the press frame.
  • Fig. 1 is a side view of my new toggle press
  • Fig. 2 is a section taken on the line 2 2 of Fig. 1;
  • Fig. 3 is a fragmentary section of the lower part of the press frame taken on the line 3 3 of Fig. 2.
  • a ram slide 203 slidably arranged in guide portions 202 of a press frame 222 with the guide arranged at right angles to the plane of a table 201 of the toggle press.
  • a platen 246 is removably mounted on the table 201 .
  • the ram slide 203 is equipped with a moving pin 234, the center line of which is numbered 209.
  • the moving pin 234 is rotatably supported in two sleeves 233 provided in the ram slide.
  • the pin carries on both sides moving pin links 205 of curved rice shape.
  • slots 235 are provide in a direction parallel to the main axis of the press frame, said slots serving to guide guiding blocks 236 during the motion of the ram slide 203.
  • the ram slide 203 carries a tool holder arrangement 243.
  • fulcrum pins 237 are provide. The axes 204 of these pins determine the fulcrums of the toggle linkages.
  • the fulcrum pins 237 are upwardly and reactively supported by two projections 238 of the press table 201. rl ⁇ he projecting ends of said fulcrurn pins 237 are mounted in supporting plates 239 fastened to the press projections 238 ⁇ by screws 244.
  • the aforementioned moving pin links 205 are pivoted by means of knee joint pins 240 to double-joint fulcrum links 206 which encompass in a fork-like manner the moving pin links 205 and are at their other ends rotatably arrangedon the above mentioned fulcrum pins 237.
  • the axes of pins 240 are numbered 208.
  • a fulcrum line is represented by that part of each double-joint fulcrum link 206 which connects its fulcruin pin center 204 with the knee joint center 208.
  • Pivoted to the double-joint links 206, by means of pins 241, are connecting rods 216, the latter being pivoted with their other ends to the crank pins 221 of outside cranks 217.
  • the drive is transmitted from a motor 220 through a coupling 245 to a pinion 242 mountedV with its shaft in the press frame 222 and meshing with a toothed gear 232.
  • a toothed gear 231 Fixedly arranged on the shaft to which the gear 232 is rigidly connected, is a toothed gear 231 which meshes with a toothed gear 230 (see Fig. 3) rigidly mounted on the shaft of crank 217.
  • the clutch for starting and stopping the press is not shown in the drawing, since such are well known.
  • Fig. l the heavy dash lines indicate the relationships between centers or axes 204, 208 and 209 when the slide 203 is in its top position and the crank pins 221 are at rearward dead center positions, i. e., opposite to the forward position in which they are illustrated in solid lines.
  • the toggle links are then arranged in such a manner that ⁇ the knee joint axis 20S is in its extreme outer or rearward position, the acute angle between the lines of action of the moving pin links 205 and the fulcrum links 206 being a maximum a and the crank pins 221 being at their rearward dead center.
  • the connecting rods 216 pull the knee joint pins 240 in forward direction until the crank pins 221 arrive at their forward dead centers shown in solid lines in Fig. l.
  • the acute angle between the toggle links 205 and 206 is a minimum, as indicated at a and the ram slide 203 is in its bottom position.
  • the lines of action of the moving pin links 205 i.
  • the lines connecting the axis 209 of the moving pin 234 with the axes 208 of the knee joints are substantially at right angles to the surface of the table 201 or platen 246 respectively. Since the toggle systems are not entirely extended in this position, the fulcrum centers 204 do not lie on the lines between centers 208 and 209 but are at a small distance therefrom.
  • the entire drive is located below the table 201, an arrangement which allows of making the overall height of the press comparatively small.
  • the ram slide 203 and its gaiide in frame 222 may be of rectangular or essentially square cross section, rather than circular.
  • a toggle press comprising an upright frame, a worksupporting platen therein, a ram guide carried by theframe above and normal to the platen, a ram slide in the guide, portions of the frame on opposite sides of the platen extending to the guide, said portions having openings therein, pin means extending from the slide through said openings respectively, means on the frame below and on opposite sides of the platen providing a pair of coaxial fulcrum pivots, a pair of depending fulcrum pin links carried by said fulcrum pivots, said pin links being provided with coaxial knee joints and with additional coaxial pivots, a pair of first connecting rods extending from said pin means to said coaxial knee joints on the pin links, rotary cranks on the frame having coaxial crank pins, a pair of second connecting rods connected to and extending from said crank pins to said pair of coaxial pivots on the fulcrum pin links, transmission means for driving said cranks, the arrangement being such that when the ram slide is advanced toward the platen its maximum amount, a straight
  • a toggle press made according to claim l, wherein both linkages constituted by all of the respective connecting rods, fulcrum pin links and cranks are located on the exterior of the frame, said ram slide, platen and transmission means being located interiorly of the frame.
  • a toggle press comprising an upright frame, a worksupporting platen therein, a ram guide carried by the frame and located above the platen, a ram slide in the guide movable perpendicularly with respect to said platen, said ram guide having openings adjacent said ram slide, pin means extending from the slider through said openings, means on the frame on opposite sides of the platen providing a pair of coaxial fulcrum pivots, a pair of depending fulcrum pin links carried by said fulcrum pivots, said pin links being provided With coaxial knee joints located at a level below the platen, a pair of connecting rods extending from said pin means to said coaxial knee joints on the fulcrum pin links, driving means on the frame adapted simultaneously to oscillate said fulcrum pin links, the arrangement being such that when the ram slide is advanced toward the platen its maximum amount, a straight line drawn between the center of the knee joint pivot on the pin link and the pin means on the slide will be substantially perpendicular to the plane of the platen

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
US249656A 1950-10-04 1951-10-04 Toggle press Expired - Lifetime US2696165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2696165X 1950-10-04

Publications (1)

Publication Number Publication Date
US2696165A true US2696165A (en) 1954-12-07

Family

ID=7996861

Family Applications (1)

Application Number Title Priority Date Filing Date
US249656A Expired - Lifetime US2696165A (en) 1950-10-04 1951-10-04 Toggle press

Country Status (2)

Country Link
US (1) US2696165A (fr)
FR (1) FR62355E (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107557A (en) * 1960-04-18 1963-10-22 Textron Ind Inc Cold header drives
US3315596A (en) * 1964-07-21 1967-04-25 May Pressenbau G M B H Press
US3766771A (en) * 1970-06-24 1973-10-23 Gulf & Western Ind Prod Co Press and drive mechanism therefor
US20100206187A1 (en) * 2007-06-28 2010-08-19 Josef Thomas Hafner Punching press

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US38013A (en) * 1863-03-24 Improvement in devices for operating churns
GB414690A (en) * 1932-12-07 1934-08-07 Frank Humphris An improved means for effecting ram-adjustment in presses
DE601690C (de) * 1933-02-23 1934-08-22 Erdmann Kircheis Fa Presse zum Herstellen von Gegenstaenden aus Kunstharz
US2269389A (en) * 1938-03-04 1942-01-06 Millard F Weida Molding press
US2271771A (en) * 1941-05-21 1942-02-03 Bliss E W Co Adjustable stroke press
CH271725A (de) * 1948-08-24 1950-11-15 May Otto Ing Dr Kniehebelpresse.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US38013A (en) * 1863-03-24 Improvement in devices for operating churns
GB414690A (en) * 1932-12-07 1934-08-07 Frank Humphris An improved means for effecting ram-adjustment in presses
DE601690C (de) * 1933-02-23 1934-08-22 Erdmann Kircheis Fa Presse zum Herstellen von Gegenstaenden aus Kunstharz
US2269389A (en) * 1938-03-04 1942-01-06 Millard F Weida Molding press
US2271771A (en) * 1941-05-21 1942-02-03 Bliss E W Co Adjustable stroke press
CH271725A (de) * 1948-08-24 1950-11-15 May Otto Ing Dr Kniehebelpresse.
US2600242A (en) * 1948-08-24 1952-06-10 May Otto Hermann Toggle press

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107557A (en) * 1960-04-18 1963-10-22 Textron Ind Inc Cold header drives
US3315596A (en) * 1964-07-21 1967-04-25 May Pressenbau G M B H Press
US3766771A (en) * 1970-06-24 1973-10-23 Gulf & Western Ind Prod Co Press and drive mechanism therefor
US20100206187A1 (en) * 2007-06-28 2010-08-19 Josef Thomas Hafner Punching press
US8739595B2 (en) * 2007-06-28 2014-06-03 Bruderer Ag Punching press

Also Published As

Publication number Publication date
FR62355E (fr) 1955-06-14

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